Jessica Simpson talks about jaw-dropping weight loss in new ad

Washington: Jessica Simpson has revealed in a commercial that how she lost her oodles of weight after giving birth to her second child last summer.

The 33-year-old singer believes that group meetings at `Weight Watchers` were helpful for her in the slim-down journey, reportedly.

She revealed in an interview in `Good Morning America` that she couldn`t believe the numbers on the scale and wasn`t sure what to expect at the meetings, but she really loved going.

Simpson said that the meetings kept her focused and motivated.